[Da...] Posted August 15 Share Posted August 15 Not sure what the 0.28 MAX ON R means. Any help would be appreciated ! Link to comment Share on other sites More sharing options...
[Ma...] Posted August 15 Share Posted August 15 Is anywhere on drawing written "R"? I don't think, that it would have something in common with roughness ( like Ra max 0.28 on R face ) Link to comment Share on other sites More sharing options...
[Da...] Posted August 15 Share Posted August 15 It seems to me that you have a 0.28 MAX on the Radius at the edge of the Ø 31.687. It is difficult to tell based only on the callout and not able to see the drawing or the part. Link to comment Share on other sites More sharing options...
[De...] Posted August 16 Share Posted August 16 Simplified your radial dimensional tolerance is 0.00, +.28. This callout is commonly used for features such as depths of holes, lengths of threads, comer radii, & chamfers. In my experience the callout on your print is traditionally used as a courtesy to the operator and machinist. Link to comment Share on other sites More sharing options...
[Wo...] Posted August 17 Share Posted August 17 Isn't IE2261 the stock removal specification for catterpillar? I think it tells you that after heat treating you can only remove 0.28mm on the radius max, but I would have to lookup the spec, because it has been a while since I've looked at it. Link to comment Share on other sites More sharing options...
[Wo...] Posted August 19 Share Posted August 19 Please sign in to view this quote. Just looked up the spec, it's definitely this. It even has an example almost exactly like yours - "0.33 MAX ON R" Link to comment Share on other sites More sharing options...
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